Olschewski, Roland

[["dc.bibliographiccitation.artnumber","7"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Ecology and Society"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Olschewski, Roland"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Benitez, Pablo C."],["dc.contributor.author","Schwarze, Stefan"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.date.accessioned","2018-11-07T09:44:34Z"],["dc.date.available","2018-11-07T09:44:34Z"],["dc.date.issued","2006"],["dc.description.abstract","Biodiversity conservation through land-use systems on private land is becoming a pressing environmental policy issue. Agroforestry, such as shade-coffee production, contributes to biodiversity conservation. However, falling coffee prices force many coffee growers to convert their sites into economically more attractive land uses. We performed an economic evaluation of coffee pollination by bees in two distinct tropical regions: an area of low human impact with forests neighboring agroforestry in Indonesia and an area of high human impact with little remaining forest in Ecuador. We evaluated bee pollination for different forest-destruction scenarios, where coffee yields depend on forests to provide nesting sites for bees. We used two novel approaches. First, we examined how coffee net revenues depend on the pollination services of adjacent forests by considering berry weight in addition to fruit set, thereby providing a comprehensive evaluation. Second, we determined the net welfare effects of land-use changes, including the fact that former forestland is normally used for alternative crops. In both regions, crop revenues exceeded coffee pollination values, generating incentives to convert forests, even if owners would be compensated for pollination services. The promotion of certified \"biodiversity-friendly\" coffee is a feasible option to maintain shade-coffee systems. This is of special importance in high-impact areas where only small forest fragments remain. We conclude that a comprehensive economic analysis is necessary to adequately evaluate rainforest preservation for the enhancement of ecosystem services, such as pollination."],["dc.identifier.doi","10.5751/es-01629-110107"],["dc.identifier.gro","3149832"],["dc.identifier.isi","000239121300006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34424"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Resilience Alliance"],["dc.relation.issn","1708-3087"],["dc.title","Economic evaluation of pollination services comparing coffee landscapes in Ecuador and Indonesia"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","255"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Landscape and Urban Planning"],["dc.bibliographiccitation.lastpage","267"],["dc.bibliographiccitation.volume","83"],["dc.contributor.author","de Koning, G. H. J."],["dc.contributor.author","Benitez, Pablo C."],["dc.contributor.author","Munoz, Fernando"],["dc.contributor.author","Olschewski, Roland"],["dc.date.accessioned","2018-11-07T10:45:29Z"],["dc.date.available","2018-11-07T10:45:29Z"],["dc.date.issued","2007"],["dc.description.abstract","We present a land-use allocation model that evaluates the impact of payments for ecosystem services such as biodiversity conservation on land-use patterns. In a non-linear optimisation procedure, land use is allocated at farm level, taking into account risk behaviour, and spatial as well as temporal variability of net revenues of land-use alternatives, using a spatial resolution of 29 m x 29 m. The model is applied to a study area of 30 km x 34 km in western Ecuador, considered a hotspot for biodiversity. In this coffee growing region, agroforestry systems with shade-coffee are important for biodiversity conservation at the landscape level, but under pressure due to low revenues. Through scenario analyses, we analyse the effects of price premiums per kg, payments per ha, and price buffering for coffee, as well as incentives leading to coffee yield increases, and payments per ha of forest remnants. We compare different risk aversion levels of the involved agents. We conclude that payments per ha are more efficient to maintain or increase coffee areas than payments per kg. Price buffering may be the most cost-effective way to support coffee production, especially at high-risk aversion levels. Significant yield increases are necessary to make coffee more attractive compared to the other alternatives. Relatively low payments per ha of forest can significantly increase forested land. Risk behaviour turns out to be an important factor when determining the possible effect of payments for ecosystem services. We conclude that the model is a versatile tool to support planning of payments for conserving ecosystems. (c) 2007 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.landurbplan.2007.04.010"],["dc.identifier.isi","000251928300004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47513"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0169-2046"],["dc.title","Modelling the impacts of payments for biodiversity conservation on regional land-use patterns"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","380"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Ecological Economics"],["dc.bibliographiccitation.lastpage","394"],["dc.bibliographiccitation.volume","55"],["dc.contributor.author","Olschewski, Roland"],["dc.contributor.author","Benitez, Pablo C."],["dc.date.accessioned","2018-11-07T10:54:17Z"],["dc.date.available","2018-11-07T10:54:17Z"],["dc.date.issued","2005"],["dc.description.abstract","Tropical forestry is often not competitive with agricultural land uses such as pasture for cattle ranching. Additional revenues from carbon sequestration generated by the Clean Development Mechanism (CDM) of the Kyoto Protocol can change this situation. In three different zones of north-western Ecuador, minimum compensation payments for carbon sequestration were determined, which would make reforestation a feasible land-use alternative. Based on our findings that these minimum prices depend on the net benefit of the respective land-use alternatives, and on the accounting regimes for CDM sink projects, we applied the accounting rules for temporary and long-term Certified Emission Reductions (CER) to two reforestation projects: forest plantation and natural regrowth of secondary forest. A comparison of these alternatives showed that secondary forest is an attractive alternative under both accounting regimes because of its low establishment costs and relative early timber revenues. After identifying the zone most suitable for carbon sink projects, we calculated net benefits of land-use changes in the event that certain prices for emission reductions were actually paid. We found that secondary forest becomes economically attractive, if the price of permanent credits is above .5/tCO(2), whereas forest plantations require permanent CER prices of .0/tCO(2). In both cases, the results are within the price margins forecasted by various institutions for the first commitment period of the Kyoto Protocol. The presented methodology is meant to support the decision making process on the supply side of a future CER market. Opportunity costs of land-use changes have to be analyzed carefully before deciding in favor of long binding forestry projects. Assigning temporary credits to naturally regrown secondary forests could-although excluded from CDM during the first commitment period-combine the advantages of a flexible accounting regime with the positive economic and ecological effects of this competitive land use. (c) 2004 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.ecolecon.2004.09.021"],["dc.identifier.isi","000233229000006"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49529"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0921-8009"],["dc.title","Secondary forests as temporary carbon sinks? The economic impact of accounting methods on reforestation projects in the tropics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","77"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Forest Economics"],["dc.bibliographiccitation.lastpage","94"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Olschewski, Roland"],["dc.contributor.author","Benitez, Pablo C."],["dc.contributor.author","de Koning, GHJ"],["dc.contributor.author","Schlichter, T."],["dc.date.accessioned","2018-11-07T08:41:53Z"],["dc.date.available","2018-11-07T08:41:53Z"],["dc.date.issued","2005"],["dc.description.abstract","The Clean Development Mechanism includes afforestation projects as possible instruments to reduce global atmospheric CO2. These projects have also the potential to combat regional environmental problems like land degradation and desertification. The present article analyzes forestry projects in north-western Patagonia from an economic viewpoint based on the latest Kyoto Protocol developments. We consider temporary and long-term Certified Emission Reductions (CER) and determine the conditions on which forest plantations are attractive to potential CER suppliers and demanders. We conclude that for most of the recent carbon price projections, carbon sink projects would be economically viable for CER suppliers and at the same time attractive to CER demanders looking for cost-efficient emission abatement opportunities. (c) 2005 Elsevier GmbH. All rights reserved."],["dc.identifier.doi","10.1016/j.jfe.2005.04.001"],["dc.identifier.isi","000233639900002"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/19569"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1104-6899"],["dc.title","How attractive are forest carbon sinks? Economic insights into supply and demand of Certified Emission Reductions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","American Journal of Agricultural Economics"],["dc.bibliographiccitation.lastpage","15"],["dc.bibliographiccitation.volume","88"],["dc.contributor.author","Benitez, Pablo C."],["dc.contributor.author","Kuosmanen, T."],["dc.contributor.author","Olschewski, Roland"],["dc.contributor.author","van Kooten, G. C."],["dc.date.accessioned","2018-11-07T10:19:44Z"],["dc.date.available","2018-11-07T10:19:44Z"],["dc.date.issued","2006"],["dc.description.abstract","Conservation payments can be used to preserve forest and agroforest systems. To explain landowners' land-use decisions and determine appropriate conservation payments, it is necessary to focus on revenue risk. Marginal conditional stochastic dominance rules are used to derive conditions for determining the conservation payments required to guarantee that the environmentally preferred land use dominates. An empirical application to shaded coffee protection in the biologically important Choco region of West Ecuador shows that conservation payments required for preserving shaded coffee areas are much higher than those calculated under risk-neutral assumptions. Further, the extant distribution of land has strong impacts on the required payments."],["dc.identifier.doi","10.1111/j.1467-8276.2006.00835.x"],["dc.identifier.isi","000234734700001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41725"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Blackwell Publishing"],["dc.relation.issn","0002-9092"],["dc.title","Conservation payments under risk: A stochastic dominance approach"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]